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dc.contributor.author Bikov, András
dc.contributor.author Hernadi M
dc.contributor.author Korosi BZ
dc.contributor.author Kunos, László
dc.contributor.author Zsámboki, Gabriella
dc.contributor.author Süttő, Zoltán
dc.contributor.author Tárnoki, Ádám Domonkos
dc.contributor.author Tárnoki, Dávid László
dc.contributor.author Losonczy, György
dc.contributor.author Horváth, Ildikó
dc.date.accessioned 2015-09-09T13:23:32Z
dc.date.available 2015-09-09T13:23:32Z
dc.date.issued 2014
dc.identifier.citation pagination=202; journalVolume=14; journalIssueNumber=1; journalTitle=BMC PULMONARY MEDICINE;
dc.identifier.uri http://repo.lib.semmelweis.hu//handle/123456789/1768
dc.identifier.uri doi:10.1186/1471-2466-14-202
dc.description.abstract BACKGROUND: Electronic noses are composites of nanosensor arrays. Numerous studies showed their potential to detect lung cancer from breath samples by analysing exhaled volatile compound pattern ("breathprint"). Expiratory flow rate, breath hold and inclusion of anatomic dead space may influence the exhaled levels of some volatile compounds; however it has not been fully addressed how these factors affect electronic nose data. Therefore, the aim of the study was to investigate these effects. METHODS: 37 healthy subjects (44 +/- 14 years) and 27 patients with lung cancer (60 +/- 10 years) participated in the study. After deep inhalation through a volatile organic compound filter, subjects exhaled at two different flow rates (50 ml/sec and 75 ml/sec) into Teflon-coated bags. The effect of breath hold was analysed after 10 seconds of deep inhalation. We also studied the effect of anatomic dead space by excluding this fraction and comparing alveolar air to mixed (alveolar + anatomic dead space) air samples. Exhaled air samples were processed with Cyranose 320 electronic nose. RESULTS: Expiratory flow rate, breath hold and the inclusion of anatomic dead space significantly altered "breathprints" in healthy individuals (p < 0.05), but not in lung cancer (p > 0.05). These factors also influenced the discrimination ability of the electronic nose to detect lung cancer significantly. CONCLUSIONS: We have shown that expiratory flow, breath hold and dead space influence exhaled volatile compound pattern assessed with electronic nose. These findings suggest critical methodological recommendations to standardise sample collections for electronic nose measurements.
dc.relation.ispartof urn:issn:1471-2466
dc.title Expiratory flow rate, breath hold and anatomic dead space influence electronic nose ability to detect lung cancer
dc.type Journal Article
dc.date.updated 2015-05-06T08:17:05Z
dc.language.rfc3066 en
dc.identifier.mtmt 2795879
dc.identifier.wos 000347433600001
dc.identifier.pubmed 25510554
dc.contributor.department SE/AOK/K/Pulmonológiai Klinika
dc.contributor.department SE/AOK/K/Radiológiai és Onkoterápiás Klinika
dc.contributor.institution Semmelweis Egyetem


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